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Basic Science and Tools
Scientific method; science in context; science and society; tools of a biologist
27
Biology
10th Grade
09/16/2013

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Cards

Term
scientific attitude
Definition
where ideas come from (curiousity)
Term
skepticism
Definition
question everything
Term
open mindedness
Definition
willing to accept different ideas
Term
peer review
Definition
scientific journals; sharing knowledge and new ideas
Term
theory
Definition
time tested concept that makes useful and dependable predictions about the natural world; dominant view
Term
limitations of science
Definition
ethical or moral viewpoints
Term
bias
Definition
particular preference or point of view that is personal
Term
pipettes and gradiated cylinders
Definition
measure and transfer liquids
Term
balances
Definition
measure solids
Term
hoods
Definition
protect from fumes
Term
microscopes
Definition
researches have developed several kinds to study small organisms
Term
compound light microscope
Definition
observe livving organisms
Term
Leeuwenhoek
Definition
made improvements to compout light microscope; microbiology
Term
Limit of Compound light microscope
Definition
images lose detail at .2 micrometers
Term

microscopes that don't require stainĀ 

(killing the organism)

Definition
phase contrast; dark field
Term
electromagnetic microscopes
Definition
use electromagnents to bend streams of electrons; used to study viruses
Term
Transmission Electron Microscope
Definition
beam of electrons magnifies the image onto a flourescent screen at the bottom of a microscope; beam can also expose photofilm
Term
Scanning Electron Microscope
Definition
small beam of electrons scans back and forth across specimen's surface; electrons bounce off and are picked up by detectors to form image on tv screen; shows 3D images
Term
Limitations of electromagnetic microscopes
Definition
specimens must be killed
Term
TEM Limits
Definition
stained; cut into thin slices
Term
SEM Limits
Definition
specimens have to be in a vaccuum (dead; like other)
Term
staining
Definition
helps parts of a cell be more visible
Term
centrifugation
Definition
separating one part of something from others
Term
centrifuge
Definition
can spin a tube up to 20,000 times per minute
Term
cell fractionation
Definition
breaking apart cells in a blender
Term
microdissection
Definition
insert material into a living cell
Term
cell cultures
Definition
single cell is placed in a dish that contains the nutrients that the cell needs; cell repoduces to form a population
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